The BluePrint Engines GM LS Compatible 376 C.I. Truck Edition Builder Series Engine & 4L65/70E 4WD-Ready Automatic Transmission Package delivers dependable LS power in a complete turnkey drivetrain engineered specifically for truck and SUV applications. Producing 510 horsepower and 440 ft.-lbs. of torque, this package combines BluePrint's proven 376 C.I. LS-compatible engine with a 4WD-ready 4L65/70E automatic transmission, making it an outstanding choice for classic truck restorations, off-road builds, daily drivers, and light towing applications.

Built around BluePrint's high-strength cast iron LS block, the engine features BluePrint LS3 aluminum cylinder heads, hypereutectic pistons, forged connecting rods, a nodular iron crankshaft, and a truck-oriented hydraulic roller camshaft that delivers excellent low- and mid-range torque while maintaining smooth street manners. Fuel and ignition are controlled by the included Holley Terminator X Max Gen IV EFI System, complete with a pre-calibrated ECU, engine wiring harness, handheld programmer, and sensors for simplified installation and reliable performance.

This version includes the complete Natural Front Accessory Drive Kit, featuring a factory-style aluminum finish with an LT1-style alternator, water pump, power steering pump, and compact A/C compressor. The factory-assembled 4WD-ready 4L65/70E transmission includes a 27-spline 4WD output shaft and accepts a common 6-bolt GM transfer case (transfer case not included), making this drivetrain an ideal solution for 4WD truck projects.

Key Features:

• 376 C.I. GM LS Compatible Truck Edition Builder Series Engine
• 510 Horsepower / 440 ft.-lbs. Torque
• 4L65/70E 4-Speed Automatic Transmission
• 4WD Ready – 27 Spline Output Shaft
• Truck Edition Builder Series
• Natural Front Accessory Pulley Kit
• Holley Terminator X Max Gen IV EFI System
• Complete ECU & Engine Wiring Harness
• BluePrint High-Strength Cast Iron LS Block
• BluePrint LS3 Aluminum Cylinder Heads
• 10.7:1 Compression Ratio
• Hydraulic Roller Camshaft
  • .553" Intake / .553" Exhaust Lift
  • 218° Intake / 224° Exhaust Duration @ .050"
  • 113° Lobe Separation Angle
• Hypereutectic Pistons
• Nodular Iron Crankshaft
• Forged 6.098" Connecting Rods
• Cast Aluminum Truck Intake Manifold
• Drive-by-Wire Throttle Body
• Fuel Rails & Injectors Included
• Coil Packs, Spark Plugs & Wires Included
• Complete Natural Front Accessory Drive
• LS Swap Oil Pan
• Premium 91+ Octane Recommended
• Dyno Tested by BluePrint Engines

Transmission Package Includes:

• GM 4L65/70E Automatic Transmission
• 4WD-Ready Case
• 27-Spline 4WD Output Shaft
• Electronic Transmission Controller
• 2200-2400 RPM Stall Torque Converter
• Flexplate
• Starter
• 13-Pin Transmission Harness

Gear Ratios:

• 1st: 3.06:1
• 2nd: 1.62:1
• 3rd: 1.00:1
• 4th: 0.70:1

Note: Uses a common 6-bolt GM transfer case mounting pattern. Transfer case not included.

Fitment Applications:

Designed for GM truck and SUV LS swap projects including:

• Chevrolet C/K Series Trucks
• Chevrolet Silverado
• GMC Sierra
• Chevrolet Blazer
• GMC Jimmy
• Chevrolet Tahoe
• GMC Yukon
• Custom 4WD Trucks
• Off-Road Builds
• Street Trucks

Note: Verify engine mounts, transfer case compatibility, crossmember, driveshaft length, cooling system, and front differential clearance before installation.

Installation Notes:

• Ships with the engine and transmission factory assembled.
• Includes a Holley Terminator X Max EFI System with BluePrint factory calibration.
• Do not recalibrate the ECU using the standard Holley setup procedure.
• Includes the complete Natural Front Accessory Drive Kit featuring:
  • LT1-style 150-amp alternator
  • LT1-style water pump
  • Type II power steering pump
  • Compact A/C compressor
• Uses a 27-spline 4WD output shaft with a common 6-bolt transfer case mounting pattern.
• Transfer case is not included.
• Ideal for ½-ton 4WD pickups with 3.90 or numerically higher axle gears and up to 33-inch tires.
• Designed for light-duty truck use and light towing. Not intended for heavy-duty towing applications.
• BluePrint recommends using Air Intake Kit BPPLS01013 to maintain proper MAF calculations and factory dyno calibration.
• Premium 91+ octane fuel is recommended.